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http://dx.doi.org/10.17662/ksdim.2016.12.1.043

Double Talk Processing using Blind Signal Separation in Acoustic Echo Canceller  

Lee, Haengwoo (남서울대학교 정보통신공학과)
Publication Information
Journal of Korea Society of Digital Industry and Information Management / v.12, no.1, 2016 , pp. 43-50 More about this Journal
Abstract
This paper is on an acoustic echo canceller solving the double-talk problem by using the blind signal separation technology. The acoustic echo canceller may be deteriorated or diverged during the double-talk period. So we use the blind signal separation to detect the double talking by separating the near-end speech signal from the mixed microphone signal. The blind signal separation extracts the near-end signal from dual microphones by the iterative computations using the 2nd order statistical character in the closed reverberation environment. By this method, the acoustic echo canceller operates irrespective of the double-talking. We verified performances of the proposed acoustic echo canceller in the computer simulations. The results show that the acoustic echo canceller with this algorithm detects the double-talk periods well, and then operates stably without diverging of the coefficients after ending the double-talking. The merits are in the simplicity and stability.
Keywords
Blind Signal Separation; Acoustic Echo Canceller; Double Talk; Hands-free;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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